html {   /*设置边框和内边距后，不会改变元素原来的大小。*/
    box-sizing: border-box;
    -webkit-box-sizing: border-box;
    -moz-box-sizing: border-box;
    -o-box-sizing: border-box;
}
*, *:before, *:after {
    box-sizing: inherit;
}
head,body,*{
    margin: 0;
    padding: 0;
}
p{
    margin: 20px 0;
}
#Outermost{           /*最外层容器样式*/
    position: relative;
    left: 50%;
    width: 70%;
    height: 500px;
    margin-left: -35%;
    background-color: #eeeeee;
    border: 1px solid ;
}
#Dynamic{
    position: relative;
    left: 25%;
    top: 20%;
    width: 50%;
    height: 300px;
    background-color: rgb(219,208,167);
}
#Button{
    position: absolute;
    top: 200px;
    left: 240px;
    width: 150px;
    height: 25px;
    padding-top: 3px;
    text-align: center;

    transition: all 1s;
    -moz-transition: all 1s;
    -webkit-transition: all 1s;
    -o-transition: all 1s;
    background-color: #dedede;
}
#Button:hover{
    background-color: #f7ecb5;
}
